Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 18151

Hash
0000009bcdb30d16424dd8a9f8af0d4eea9097cbc0feea95deb3f28cc6ae00ba
Confirmations
23765
Time
2026-10-09 01:02:59 UTC
Median time
2026-10-09 00:54:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4511bd892300c9004bd6834c462aa8ceeb6fe943d369c88ccb4eb3324175ad87
Previous block
00000074d120711b6ff988f1789f921aa74bc74a2d737b7d8e281747a67149a1
Next block
0000006560de0047fc60ae2721c7741a3882b42cec318990fe9e248f85b951d4

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 18151 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
1c202d49531a3d7a77b05672f61f7d24… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4511bd892300…b3324175ad87 coinbase1250